| High Pressure Area |
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| CATEGORIES ABOUT HIGH PRESSURE AREA | |
| basic meteorological concepts and phenomena | |
| anticyclones | |
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sunlight, there is more incoming shortwave Solar Radiation and temperatures are higher. At night, the absence of clouds means that outgoing Longwave Radiation (i.e. heat energy from the surface) is not absorbed, giving cooler Diurnal low temperatures in all seasons. Climatologically, high pressure forms at the Horse Latitudes as a result of air which has been uplifted at the Equator , transported poleward, and cooled. This is also known as Hadley Cell circulation. Many of the world's Deserts are associated with these climatological high pressure systems. Surface high pressure systems tend to be larger in area and have weaker surface winds than low pressure systems, due to the addition of surface friction to the pressure gradient and Coriolis Effect that drives the circulation. Some high pressure areas persist long enough that they acquire names. The land-based Siberian High often remains quasi-stationary for more than a month during the most frigid time of the year, making it unique in that regard. Citizens of the United States are aware of the Bermuda High, which Europeans call the Azores High. It is a large high which brings fair weather over much of the North Atlantic ocean. Along its southerly periphery, the clockwise circulation often impels Easterly Wave s across the ocean towards North America during the Hurricane season. SEE ALSO |
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